DHCP server won't start at boot; starts fine afterwards

[Jay Nugent]

Greetings,

On Thu, 24 Dec 2009, Tim Wunder (Lists) wrote:

> Interesting problem that I'm not sure how to address:
> When I boot my Fedora 11 box, dhcpd fails to start (it tries, but
> instead of [OK] during bootup, the boot screen displays [FAILED].
> 
> The interesting thing is that once the computer is booted, I can login
> as root and perform a 'service dhcpd start' and dhcpd starts right up
> with no error messages.
> 
> dhcpd.conf:
> $ cat /etc/dhcp/dhcpd.conf
> ddns-update-style interim;
> option routers 10.0.0.1;
> option subnet-mask 255.255.255.0;
> option domain-name-servers 208.67.222.222, 208.67.220.220;
> option ip-forwarding on;
> 
> subnet 10.0.0.0 netmask 255.255.255.0 {
>         range 10.0.0.100 10.0.0.110;
>         default-lease-time 1200;
>         max-lease-time 9200;
>         host greg {
>                 hardware ethernet 00:0d:88:46:5a:18;
>                 fixed-address 10.0.0.120;
>         }
> }
> 
> ifconfig:
> eth0      Link encap:Ethernet  HWaddr 00:17:31:90:38:E7
>           inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
>           inet6 addr: fe80::217:31ff:fe90:38e7/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:209791 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:183267 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:228487092 (217.9 MiB)  TX bytes:28960699 (27.6 MiB)
>           Interrupt:26 Base address:0x2000
> 
> eth1      Link encap:Ethernet  HWaddr 00:17:31:90:2C:C8
>           inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
>           inet6 addr: fe80::217:31ff:fe90:2cc8/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:51993 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:64539 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:7359620 (7.0 MiB)  TX bytes:50188580 (47.8 MiB)
>           Interrupt:25
> 
> 
> 
> 192.168.1.2 connects to my FiOS router and 10.0.0.1 serves the internal
> network.
> 
> The system is running squid/dansguardian in a transparent proxy
> configuration to provide an internet filter, and they start and run just
> fine.
> 
> This is in /var/log/messages (sorry for the nast word wrap):
> 
> Dec 23 18:03:39 home dhcpd: No subnet declaration for eth1 (no IPv4
> addresses).
> Dec 23 18:03:39 home dhcpd: ** Ignoring requests on eth1.  If this is
> not what
> Dec 23 18:03:39 home dhcpd:    you want, please write a subnet
> declaration
> Dec 23 18:03:39 home dhcpd:    in your dhcpd.conf file for the network
> segment
> Dec 23 18:03:39 home dhcpd:    to which interface eth1 is attached. **
> 
> Dec 23 18:03:39 home dhcpd:
> 
> Dec 23 18:03:39 home dhcpd:
> 
> Dec 23 18:03:39 home dhcpd: Not configured to listen on any interfaces!
> 
> Dec 23 18:03:39 home dhcpd:
> 
> Dec 23 18:03:39 home dhcpd: This version of ISC DHCP is based on the
> release available
> Dec 23 18:03:39 home dhcpd: on ftp.isc.org.  Features have been added
> and other changes
> Dec 23 18:03:39 home dhcpd: have been made to the base software release
> in order to make
> Dec 23 18:03:39 home dhcpd: it work better with this distribution.
> 
> Dec 23 18:03:39 home dhcpd:
> 
> Dec 23 18:03:39 home dhcpd: Please report for this software via the Red
> Hat Bugzilla site:
> Dec 23 18:03:39 home dhcpd:     http://bugzilla.redhat.com
> 
> Dec 23 18:03:39 home dhcpd:
> 
> Dec 23 18:03:39 home dhcpd: exiting.
> 
> 
> 
> Any clues?

   My guess would be that it is being started too early before the 
interfaces are up.   Assuming you are booting into runlevel 5 (you said 
Fedora-11 and assuming with X1 running), then edit the /etc/rc5.d/S##dhcp 
line and bump the ## number up higher so it activates this service later 
in the startup process.

      --- Jay 

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